Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual motor de 1957 tem um chassi do tipo connaught b?
 ###Tabelas: CREATE TABLE complete_world_championship_formula_one_results (complete_world_championship_formula_one_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Entrant VARCHAR, Chassis VARCHAR, Engine VARCHAR, Points INT) CREATE TABLE minister_for_community_safety_and_legal_affairs (minister_for_community_safety_and_legal_affairs_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Entered office VARCHAR, Left office VARCHAR, Party VARCHAR, First Minister VARCHAR) CREATE TABLE alphabet_and_transliteration (alphabet_and_transliteration_id AUTO_INCREMENT PRIMARY KEY, Gothic letter or digraph VARCHAR, Roman equivalent VARCHAR, "Normalised" transliteration VARCHAR, Sound VARCHAR, Normal environment of occurrence (in native words) VARCHAR, Proto-Germanic origin VARCHAR) CREATE TABLE iodine-123 (iodine-123_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Investigation VARCHAR, Route of administration VARCHAR, In-vitro / in-vivo VARCHAR, Imaging / non-imaging VARCHAR) CREATE TABLE n (n_id AUTO_INCREMENT PRIMARY KEY, Township VARCHAR, County VARCHAR, Pop. (2010) INT, Land ( sqmi ) INT, Water (sqmi) INT, Latitude INT, Longitude INT, GEO ID INT, ANSI code INT)  
SELECT Engine FROM complete_world_championship_formula_one_results WHERE Chassis = connaught type b AND Year > 1957